Associate Professor S. Balabanov
Institute of Solid State Physics, Bulgarian Academy of Sciences
sbalab@issp.bas.bg
A brief survey has been made of the classical electrometric methods, developed by academician G. Nadjakov and there advantages in measuring of many light currents, little tensions and electric charges. Asymmetric quadrant electrometer in air and later in high vacuum medium, has mainly bean used for measurement of work function and its variation in case of metal surfaces.
A rotation electrometer (with electronic amplifier), in which a biscuit is turn by a rotating magnetic field, has also been developed on the basis of the classical quadrant electrometer constructed by acad.G.Nadjakov and associates.
The development of electrometric methods mentioned above has also provided a possibility for a considerably more effective research of photoelectrical state in solid dielectrics such as: sulfur, anthracene, ets without the second (upper) electrode contacting the surface of the photopolarizing material.
Address:
GEORGI NADJAKOV INSTITUTE OF SOLID STATE PHYSICS
Bulgarian Academy of Sciences
72 Tsarigradsko chaussee blvd.
BG-1784 Sofia, Bulgaria
Phone: +359 2 979 58 31
Fax: +359 2 975 36 32
E-mail: gkamish@issp.bas.bg
Skype: physmuseum
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Created: 3 October 2006
Updated: 1 October 2015
